  <!-- <nz-layout class="aa">
    <nz-sider ><app-menu [url]='url'></app-menu></nz-sider>
    <nz-layout>
        <router-outlet ></router-outlet>
    </nz-layout>
  </nz-layout> -->
  <nz-content class="aa" nz-row>
    <div nz-col nzSpan='5' style="height:100%" ><app-menu [url]='url'></app-menu></div>
    <div nz-col nzSpan='19'>
        <router-outlet ></router-outlet>
    </div>
  </nz-content>
